Only thing is we very rarely get any precipitation here when it is that cold. Usually the winter temps stay above freezing when we have wet weather and it is clear when temps fall below freezing.

I would not bother with either and go for the ultimate helmet cover by Taiga.

J and G Cyclewear. That's what I use, and I live in the PNW. You're in Oregon, and they're made in OR, so you'd be buying locally...

I commute in PDX and I have the Garneau one, which I picked up at Performance on sale. It works as advertised and fits my Giro Atmos perfectly. It might look breathable, it's really not so much, as I got quite hot in it on the warmer rainy days here. My decision though was based entirely on which one would best fit my helmet as I just brought my helmet with me to check out all the options.

I just got a Bern Macon for skiing though, and decided on getting the "summer kit", so I will end up using that for my winter commuting now instead.

I commute between PDX and Beaverton every day and won't wear one. They don't let my head breathe enough and I find that I overheat. On the really nasty wet days I have a thin felt lined e-Vent cap that I wear under my helmet. If its warm enough I just wear my cycling cap under it and don't care if I get wet.

If I had to chose between the 2 you posted Id get the yellow one.

Do cite sources on those , I had one and seam tape on the Gore-tex gave way,
It's really there as a comfort to the customer to get the register to go 'Ka Ching'.

It, the seam tape, never lasts.

REI repair .. or PO inroute, just Stole it, when I sent it to be redone.
No they never made one, this one I got in UK in 91.

Now I know ..

I've seen an Assos one at a bike shop in downtown PDX.
https://www.competitivecyclist.com/pr...:referralID=NA

Personally I sweat enough that I find these to be pointless. I like the standard cycling caps with an REI Buff folded in on itself a few times to keep my ears warm. I only switch to my other full cap when its in the 30s and raining.
This is basically what I use when it gets really cold and nasty out. Mine is an REI version using e-Vent fabric that as far as I can tell they don't make anymore.
https://www.competitivecyclist.com/pr...718.373.0.html

I have the neon green Garneau one- found it on sale at Performance and picked it up. I recommend trying it on the helmet first though. Mine is too big and I have to put it on a special way lest I end my ride with a day-long forehead dent from the elastic.

#1: As far as recommending one, it really depends what your needs are. I got mine after the ride where I had to stop at least three times in an hour to find paper towels ( thanks Subway, Chevron and roadside barista lady) to squeeze rain out of my hair, which was pulled back, in an effort to stem the flood that was pouring into my eyes. Blindness was proving to be a huge liability and a bigger irritation. Dammit, if riding is not fun then any and all adjustments must be made on the spot to restore it to being super damn fun.

However, I found that unless it is an extremely rainy circumstance, the helmet cover acts as a terrarium, trapping all the heat from my body that is trying to escape through my head. Too hot. So, I think I have used it twice in four months.

During a week-long trip in Ventura county, I woke up to a rainy day and used the hotel shower cap. It worked beautifully.

#2: If I lost mine, I think I would find a replacement in my collection of hotel shower caps.

I live in Seattle, and ride through every weather that is ride-able -- if my bike will get through it and can stay upright in or on it, I ride. I value my super warm gloves and army-surplus wool socks far more than I do the helmet cover.

I usually just wear a cap under my helmet. I do have the Garneau one, but have relegated it to rainy training rides or for my wife to use - I have lights and battery on my helmet, and the cover won't work with them there.

I have a J & G helmet cover but it doesn't have a provision to hold my Blackburn Flea helmet headlight, which I really like as I ride in the dark most of the time. It is the main reason I wear a helmet. It has a tag to hang a rear blinky from, but won't hold my headlight in any useful way. So for the winter I put electrical and masking tape over all of the vent holes in my helmet. That seems to work OK.

My O2 rain shell does have a hood which I would use under my helmet, but I like the J & G jacket better so I haven't been wearing the O2 lately.

I've been using a black Garneau helmet cover for years. I leave it on all winter. It amazes me how durable it is.

Ding ding ding! We have a winner.

I use a thin merino neck gaiter. It was a little tight, so I figured I'd wear it like a hat for a few days to stretch it out. I think that was three years ago, and I'm still wearing it like a hat, because it's the perfect hat for cycling.

Funny the timing...
Wore it today and was ever so delighted to do so. Today was non-stop rain.

I tend to overheat in general, but I've been using a helmet cover for years and it works great. I've had no problems with my head getting too hot. I live in the PNW and I ride on many rainy but warm days, whether it's in-town riding, the 10 mile commute, or long weekend rides.

I'd ignore the folks on here saying "no" based purely on theory.

I commute in Portland OR, with headlamp and tail lamp on my helmet, so a helmet cover is out. I'd definitely pick the neon one, if I did use one. As it is, I simply wear a baseball cap under the helmet. It is water-resistant enough and the cap's visor works while the helmet's visor doesn't. When it is really raining, your glasses are getting wet no matter what. The cap also holds in heat better that the helmet alone, though when it is cold, I wear a thin balaclava too. We've had an easy winter so far, weird because La Nina was supposed to bring a wet, cold winter.

Good idea with the baseball cap jyl. I miss the visor on my old helmet

I contemplated the same question until I read a tip for cheap motel style shower caps. they are great. thin, easy to store, easy to fit, let your helmet colors reflectivity and design show through. they work great against the cold and wind too. when things heat up it's so easy to whip them off at a traffic light and stuff in a pocket. no struggling with a tight fit. no giant goody yellow ball on your head.

of course you need to stay in a decent hotel first to get one hahaha but maybe you can get such an item at cvs?

I strongly recommend using the Garneau one. I have been doing so for several years, and have gone though three or more of them. They don't wear out, but they get stained and sketchy looking. I haven't tried the Nashbar one. I like the look from an aesthetic standpoint, but I consider the high visibility of the Garneau one essential.

I generally leave it on all the time, year round, but I do take it off occasionally when it's really hot out.

On a gray, rainy day, you need all the visibility you can get. Go for the lemon lime.

since I commute at night or during low light times of the day I need to have lights everywhere and need to be ugly conspicuous especially in rain. I picked up a thin light weight tennis ball yellow one back a while and cut slits in it to accommodate the lights (top and back). works fine. though in torrential downpours it will leak. however nothing will help when it's really pouring here in Atlanta in the winter. YMMV.

bg57 is that for waterproofing your lights?

I not only have lights front (top really) and rear, but I have a large aftermarket visor on my helmet so I haven't tried any helmet covers assuming they won't fit. I've been intrigued for a while and considering crafting my own, but with my commute being right around an hour and the rain in Seattle during my commute almost always seems to be a steady light rain which isn't a problem at our temperatures. If it was pouring down rain regularly I might feel differently.

For now, a thin balaclava under the helmet does well to keep my head warm enough and breathes to let out some of the heat which I build up climbing all the hills here.

YMMV

I use Jandd helmet cover. Its big enough for use on helmets with visor.
I use it with skull cap underneath for winter riding. It works for me.

I have noticed that the sizes of the hoods in windbreakers and rain gear covers with no problem.